Application of Optimized BP Neural Network in Addressing for Garbage Power Plant

Neural network has the abilities of self-studying, self-adapting, fault tolerance and generalization. But there are some defaults in its basic algorithm, such as low convergence speed, local extremes, and uncertain number of implied layer and implied notes. This paper presents a solution for overcoming these shortages from two aspects. One is to adopt principle component analysis to select study samples and make some of them contain sample characteristics as many as possible, the other is to train the network using Levenberg-Marquardt backward propagation algorithm. This new method was proved to be valid and practicable in site selection of practical garbage power generation plants.     

中文TTS系统中代价权值确定的方法

近年来,中文文语转换系统趋向于采用基于语料库上下文的单元选择法来获取拼接的语音单元实例,事实证明这种方法对于合成高质量的语音非常有效。单元选择的关键是各单元特征权值的确定,这里将提出一种非常有效的在单元选择中确定各特征权值的方法。它是对现有的利用线性回归确定权值方法的改进。其主要思路是对单元进行分类,对于各类单元分别进行线性回归,同时定义了一个客观衡量语音差异的距离,从而可以回归得到各特征的恰当权值。     

Partner selection model and soft computing approach for dynamic alliance of enterprises

Partner selection is an active research topic in agile manufacturing and supply chain management. In this paper, the problem is described by a 0-1 integer programming with non-analytical objective function. Then, the solution space is reduced by defining the inefficient candidate. By using the fuzzy rule quantification method, a fuzzy logic based decision making approach for the project scheduling is proposed. We then develop a fuzzy decision embedded genetic algorithm. We compare the algorithm with tranditional methods. The results show that the suggested approach can quickly achieve optimal solution for large size problems with high probability. The approach was applied to the partner selection problem of a coal fire power station construction project. The satisfactory results have been achieved.     

台山发电厂国产2台600 MW机组主变选型的分析

对220kV,720MVA电厂选用单相变压器和三相变压器进行了技术经济比较，并结合国内制造，运输条件和运行维护等实情进行了验证，得出了选用三相变压器的结论。     

无卤低烟阻燃电缆设计与工艺

无卤低烟电缆作为电线电缆行业的一个新品种 ,正随着经济的发展、技术的成熟而得到推广应用。本文就无卤低烟阻燃电缆的设计与工艺控制提出一些看法。     

关于社会发展观的思考

科学的发展观是社会发展的正确描述,是制定社会发展宏观模式的理论依据。传统的发展观源于牛顿经典力学方法论,具有极为浓厚的单线决定论色彩,有必要以多途径、多线式的进化树发展机制所取代,这有助于中国现代化道路的正确选择和对中国命运的思考。     

供热系统中热量表的分类及选型

介绍了供热系统中热量表的分类，重点对机械式、超声波式和电磁式热量表的适用范围及选型方法进行论述，并对配对温度传感器和积分仪的选型要求作了介绍。     

焊管热镀用锌选择

针对鞍山钢管有限公司热浸镀焊管的生产情况，并仅就焊管热镀用锌的合理选择问题发表浅见，探讨从降低生产成本来达到提高企业的经济效益和社会效益的目的。     

Ruminal metabolism of leafy spurge in sheep and goats: A potential explanation for differential foraging on spurge by sheep,goats, and cattle

Leafy spurge (Euphorbia esula) is an introduced forb that is invading western rangelands. Goats (Capra hircus) readily graze the plant, but cattle (Bos tarus) generally and sheep (Ovis aries) locally appear to develop conditioned flavor aversions to leafy spurge. They either avoid the plant entirely or graze it reluctantly. We hypothesized that: (1) a diterpene diester that can occur in leafy spurge was an aversive agent, and (2) diet selection differences among ruminant species may be partly a function of differential ruminai metabolism of aversive phytochemicals, and further that cattle and sheep may be reluctant to graze leafy spurge because their ruminai microbes do not metabolize certain leafy spurge chemicals as do ruminai microbes in goats. Sheep did not develop an aversion to a novel food when its consumption was followed by an intravenous injection of ingenol 3,20-dibenzoate (P=0.34). Sheep did develop an aversion to a novel food when its intake was followed by a dose of leafy spurge fermented with sheep ruminai digesta, but not when followed by a dose of leafy spurge fermented with goat ruminai digesta (P= 0.03). This suggests that goat ruminai microbes may modify leafy spurge such that it does not elicit an aversion in sheep.This research was supported in part by a grant from the Cooperative States Research Service (91-38300-6158). All experimental procedures with ruminants followed a protocol approved by the U.S. Sheep Experiment Station's Animal Care and Use Committee. Mention of trade names or companies does not constitute an implied warranty by USDA or the authors.